comp.lang.c FAQ list
·
Question 19.39

Q:
How can I
handle
floating-point exceptions gracefully?

A:
On many systems, you can define a function matherr
which will be called when there are certain floating-point errors,
such as errors in the math routines in <math.h>.
You may also be able to use signal
(see question 19.38)
to catch SIGFPE.
See also
questions 14.9 and 20.6b.